1 //===-- MICmdBase.h ---------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
13 // Overview: CMICmdBase interface.
15 // Environment: Compilers: Visual C++ 12.
16 // gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
17 // Libraries: See MIReadmetxt.
25 #include "MIUtilString.h"
26 #include "MICmnBase.h"
27 #include "MICmnResources.h"
28 #include "MICmdInvoker.h"
29 #include "MICmdFactory.h"
30 #include "MICmdData.h"
31 #include "MICmnMIResultRecord.h"
32 #include "MICmdArgSet.h"
35 class CMICmnLLDBDebugSessionInfo;
37 //++ ============================================================================
38 // Details: MI command base class. MI commands derive from this base class.
39 // The Command Factory creates command objects and passes them to the
40 // Command Invoker. The Invoker takes ownersip of any commands created
41 // which means it is the only object to delete them when a command is
42 // finished working. Commands do not delete themselves.
43 // There are two types of command implicitly defined by the state of
44 // the m_bWaitForEventFromSBDebugger flag. There is the event type
45 // command which registers (command fn) callbacks with the SBListener
46 // does some work then wakes up again when called back, does more work
47 // perhaps, ends, then the Invoker calls the command's Acknowledge
48 // function. The other type of command is one that just does some work,
49 // ends, then the Invoker calls the command's Acknowledge function. No
51 // A command's Execute(), Acknowledge() and event callback functions are
52 // carried out in the main thread.
53 // A command may use the argument derived object classes (CMICmdArgValBase)
54 // to factor handling and parsing of different types of arguments
55 // presented to a command. A command will produce an error should it
56 // be presented with arguments or options it does not understand.
58 // Authors: Illya Rudkin 18/02/2014.
63 , public CMICmdInvoker::ICmd
64 , public CMICmdFactory::ICmd
68 /* ctor */ CMICmdBase( void );
72 // From CMICmdInvoker::ICmd
73 virtual const SMICmdData & GetCmdData( void ) const;
74 virtual const CMIUtilString & GetErrorDescription( void ) const;
75 virtual bool SetCmdData( const SMICmdData & vCmdData );
76 virtual void CmdFinishedTellInvoker( void ) const;
77 virtual const CMIUtilString & GetMIResultRecord( void ) const;
78 virtual const CMIUtilString & GetMIResultRecordExtra( void ) const;
79 virtual bool HasMIResultRecordExtra( void ) const;
80 virtual bool ParseArgs( void );
81 // From CMICmdFactory::ICmd
82 virtual const CMIUtilString & GetMiCmd( void ) const;
83 virtual CMICmdFactory::CmdCreatorFnPtr GetCmdCreatorFn( void ) const;
85 virtual MIuint GetGUID( void );
89 /* dtor */ virtual ~CMICmdBase( void );
90 virtual bool GetExitAppOnCommandFailure( void ) const;
94 void SetError( const CMIUtilString & rErrMsg );
96 T * GetOption( const CMIUtilString & vStrOptionName );
97 bool ParseValidateCmdOptions( void );
101 CMICmdFactory::CmdCreatorFnPtr m_pSelfCreatorFn;
102 CMIUtilString m_strCurrentErrDescription; // Reason for Execute or Acknowledge function failure
103 SMICmdData m_cmdData; // Holds information/status of *this command. Used by other MI code to report or determine state of a command.
104 bool m_bWaitForEventFromSBDebugger; // True = yes event type command wait, false = command calls Acknowledge() straight after Execute() no waiting
105 CMIUtilString m_strMiCmd; // The MI text identifying *this command i.e. 'break-insert'
106 CMICmnMIResultRecord m_miResultRecord; // This is completed in the Acknowledge() function and returned to the Command Invoker to proceed stdout output. Each command forms 1 response to its input.
107 CMIUtilString m_miResultRecordExtra; // This is completed in the Acknowledge() function and returned to the Command Invoker to proceed stdout output. Hack command produce more response text to help the client because of using LLDB
108 CMICmnLLDBDebugSessionInfo & m_rLLDBDebugSessionInfo; // Access to command sharing information or data across any and all command based derived classes.
109 bool m_bHasResultRecordExtra; // True = Yes command produced additional MI output to its 1 line response, false = no extra MI output formed.
110 CMICmdArgSet m_setCmdArgs; // The list of arguments *this command needs to parse from the options string to carry out work.
113 //++ ------------------------------------------------------------------------------------
114 // Details: Retrieve the command argument or option object pointer so that it can be
115 // examined. If the option found and valid get the value (number, string or list
116 // - see CMICmdArgValBase class) from it to use with the command's decision
117 // making. If the argument is not found the command's error description is set
118 // describing the error condition.
119 // Type: Template method.
120 // Args: vStrOptionName - (R) The text name of the argument or option to search for in
121 // the list of the command's possible arguments or options.
122 // Return: T * - CMICmdArgValBase derived object.
123 // - NULL = function has failed, unable to retrieve the option/arg object.
127 T * CMICmdBase::GetOption( const CMIUtilString & vStrOptionName )
129 CMICmdArgValBase * pPtrBase = nullptr;
130 if( !m_setCmdArgs.GetArg( vStrOptionName, pPtrBase ) )
132 SetError( CMIUtilString::Format( MIRSRC( IDS_CMD_ERR_OPTION_NOT_FOUND ), m_cmdData.strMiCmd.c_str(), vStrOptionName.c_str() ) );
136 return static_cast< T * >( pPtrBase );
139 //++ ------------------------------------------------------------------------------------
140 // Details: Retrieve the command argument or option object pointer using template function
141 // CMICmdBase::GetOption(). Should the argument (by name) not be found the
142 // command will exit with a failure (set in GetOption()).
143 // Type: Preprocessor macro.
144 // Args: a - (R) The actual variable's name.
145 // b - (R) The type of variable (appended to CMICmdArgVal i.e. CMICmdArgValString).
146 // c - (R) The text name of the argument or option to search for in the list of
147 // the command's possible arguments or options.
148 // Return: T * - CMICmdArgValBase derived object.
149 // - NULL = function has failed, unable to retrieve the option/arg object.
152 #define CMICMDBASE_GETOPTION( a, b, c ) \
153 CMICmdArgVal##b * a = CMICmdBase::GetOption< CMICmdArgVal##b >( c );\
155 return MIstatus::failure;
156 // This comment is to stop compile warning for #define